A5056461853- Advanced Condensed Matter Physics
- Magnetic and transport properties of perovskites and related materials
- Multiferroics and related materials
- Gas Sensing Nanomaterials and Sensors
- Catalytic Processes in Materials Science
- Inorganic Chemistry and Materials
- Ferroelectric and Piezoelectric Materials
- Magnetic properties of thin films
- Rare-earth and actinide compounds
- Iron-based superconductors research
- Ga2O3 and related materials
- X-ray Diffraction in Crystallography
- ZnO doping and properties
- Physics of Superconductivity and Magnetism
Hokkaido University
2022-2025
National Institute for Materials Science
2022-2025
This study reports the successful synthesis and comprehensive characterization of Ti3RhSiO Ti3IrSiO, earliest identified members Ti-based Au4Al-type materials. These compounds crystallize in cubic space group P213 (No. 198), with refined lattice parameters 6.75362(2) Å 6.75524(1) Å, respectively. Oxygen plays a crucial role stabilizing phase, as confirmed by synchrotron X-ray diffraction absence this phase oxygen-free samples. First-principles calculations resistivity measurements reveal...
In this study, we successfully synthesized the double perovskite oxide Cd2FeReO6 by using a high-temperature and high-pressure method. The crystal structure was confirmed to belong P21/n space group, exhibiting approximately 68% ordering of Fe3+ Re5+ ions at B-site with remaining regions showing antisite disorder. measured Curie temperature 460 K, slightly lower than expected but still significantly above room temperature. Remarkably, displayed remarkable low-field butterfly type tunneling...
The ${\mathrm{Cr}}^{4+}$ oxidation state with two electrons in the $\mathrm{Cr}\phantom{\rule{0.28em}{0ex}}3d$ shell is not often observed perovskite-type oxides, as high pressures and temperatures are generally required to stabilize octahedral coordination. Herein, we present a comparative study of half-doped chromites ${\mathrm{Gd}}_{0.5}{\mathrm{Sr}}_{0.5}{\mathrm{CrO}}_{3}$ (GSCO) ${\mathrm{Gd}}_{0.5}{\mathrm{Ca}}_{0.5}{\mathrm{CrO}}_{3}$ (GCCO). Fifty percent Cr occurs after...
Under high-pressure and high-temperature conditions, doped Bi3Re3O11 Bi3Os3O11 with Fe up to 29 atomic % were synthesized. The crystal structures chemical compositions of Bi3Os2.45Fe0.55O11 Bi3Re2.13Fe0.87O11 determined by synchrotron powder X-ray diffraction electron probe microanalysis. Both explained a KSbO3-type model the space group Pn3̅. Magnetic electronic transport property measurements showed that exhibited ferrimagnetic transition at highest magnetic ordering temperature 490 K in...
The exchange bias effect is pivotal in semiconductor technology, particularly for magnetic recording and spin valve devices. However, conventional materials that rely on interfaces present manufacturing challenges. This study focuses the bulk without interfaces. A novel material, Cd2FeOsO6, was synthesized, exhibiting a strong at low-cooling fields. offers insights into with pronounced unique mechanism. Cd2FeOsO6 demonstrates ferrimagnetic ordering hard magnetism below 285 K. Notably,...
We have successfully synthesized two new half-doped perovskites, MnV0.5Nb0.5O3 and MnV0.5Ta0.5O3, with unique small Mn2+ cations at the A site under high-temperature high-pressure conditions (6 GPa 900–1300 °C). Synchrotron X-ray structure analysis confirmed their crystal structures to belong space group Pnma, they do not exhibit features of an ordered perovskite (double perovskite) structure. Magnetic property measurements revealed essentially antiferromagnetic nature below 17 18 K for both...